fix(rectification): bind evidence to current server turn

frontend/tests/rectification-v9-status-security.test.ts

@@ -94,6 +94,43 @@ test("confirmed requires the engine gate plus explicit grounded consent", async
   );
 });
 
+test("confirm-birth-time binds consent to the server-owned current turn", async () => {
+  const accounting = fakeAccounting({
+    ...receiptHandlers,
+    confirm_agentic_rectification_birth_time: () => ({
+      success: true,
+      saved_time: "05:02",
+      status: "confirmed",
+      result_id: RESULT_ID,
+      case_status: "confirmed",
+      idempotent: false,
+    }),
+  });
+  const tools = createRectificationV9Tools({
+    userId: USER_ID,
+    caseId: CASE_ID,
+    turnId: TURN_ID,
+    accounting: accounting.client as never,
+  });
+  const confirm = tools["rectification-confirm-birth-time"] as unknown as {
+    inputSchema: { safeParse(value: unknown): { success: boolean } };
+    execute(input: unknown): Promise<unknown>;
+  };
+  const input = {
+    caseId: CASE_ID,
+    resultId: RESULT_ID,
+    candidateId: "05:02",
+    consentQuote: "就用05:02",
+  };
+  assert.equal(confirm.inputSchema.safeParse(input).success, true);
+  assert.equal(confirm.inputSchema.safeParse({ ...input, sourceTurnId: "77777777-7777-4777-8777-777777777777" }).success, false);
+
+  await confirm.execute(input);
+  const call = accounting.calls.find((item) => item.fn === "confirm_agentic_rectification_birth_time");
+  assert.ok(call);
+  assert.equal(call.args.p_source_turn_id, TURN_ID);
+});
+
 test("candidate ownership is case-scoped: the RPC always receives the case id", async () => {
   const accounting = fakeAccounting({
     accept_agentic_rectification_candidate_for_case: () => ({
@@ -152,7 +189,6 @@ test("terminal cases reject evidence writes and candidate actions", async () =>
   await assert.rejects(
     (tools["rectification-propose-evidence"] as unknown as { execute(input: unknown): Promise<unknown> }).execute({
       caseId: CASE_ID,
-      sourceTurnId: TURN_ID,
       quote: "2016年9月离开家去北京工作",
       proposedKind: "career_entry",
       subject: "self",